18745212 has 12 divisors (see below), whose sum is σ = 43738856. Its totient is φ = 6248400.

The previous prime is 18745211. The next prime is 18745213. The reversal of 18745212 is 21254781.

It is an interprime number because it is at equal distance from previous prime (18745211) and next prime (18745213).

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18745212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18745211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781039 + ... + 781062.

Almost surely, 2^18745212 is an apocalyptic number.

18745212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18745212 is an abundant number, since it is smaller than the sum of its proper divisors (24993644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18745212 is a wasteful number, since it uses less digits than its factorization.

18745212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562108 (or 1562106 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 18745212 is about 4329.5741130046. The cubic root of 18745212 is about 265.6420269962.

Adding to 18745212 its reverse (21254781), we get a palindrome (39999993).

The spelling of 18745212 in words is "eighteen million, seven hundred forty-five thousand, two hundred twelve".